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Radiation curing is one of the most economical and environmentally compatible curing technologies known. It has successfully enabled numerous industrial applications over recent decades. There still remain, however, challenges that prevent penetration into broader areas of interest. For example, in practice there are intrinsic limitations associated with radical photopolymerization, e. g. oxygen inhibition, insufficient curing of shadow areas, poor curing of thick or highly pigmented coatings, lack of adhesion on certain substrates, etc. Recent developments at Ciba Specialty Chemicals have specifically targeted these deficiencies and thus support the expansion of the scope of UV curing technology in industrial applications. In addition novel photo-induced effects have been developed, which open up new application areas that have heretofore been unexploited.